Abstract
This paper builds the mathematical model of a doubly-fed wind power generator (DFIG) which is widely used in wind power generation. Based on stator magnetic field orientation vector technique, active and reactive power decoupling control strategy is constructed. Based on the software package PSCAD/EMTDC, the grid-connected system of DFIG is modeled, and the dynamic response characteristics of generators active and reactive power on ramp change of wind speed conditions is simulated and analyzed. The simulation results show that the variable pitch DFIG has good operating characteristics and the model is correct.
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